Spoke-shave



UNITED STATES PATENT OFFICE.

SAMUEL LEONARD, OF BRIDGEWATER, MASSACHUSETTS.

SPOKE-SHAVE.

Specication of Letters Patent No. 30,071, dated September 18, 1860.

To alt whom it may concern:

Be it known that I, SAMUEL LEONARD, of Bridgewater, in the county ofPlymouth and State of Massachusetts, have invented a new and usefulImprovement in the Spoke-Shave, and do hereby declare that the same isfully described and represented in the following specification and theaccompanying drawings, of which Figure 1 is a top View; Fig. 2, anunderside view; Fig. 3, a front elevation; Fig. 4, a rear elevation; andFig. 5, a central and transverse section of a spokeshave containing myinvention.' Fig. 6 is an underside view of the stock divested of thecutter and its movable throat piece. Fig. 7 is an underside view of thethroat piece and the Stock as they appear when the knife is removedtherefrom. Fig. 8 is a longitudinal section of the instrument takenthrough the springs of the throat piece.

The nature of my invention consists in an improved arrangement of theadjustable mouthpiece and its operative mechanism with respect to thestock and the cutter arranged in the stock in manner as hereinafterexplained.

In the drawings, A, exhibits the stock as provided with two handles, a,a, and as constructed with a recess b, for the reception of anadjustable throat piece B, the recess and throat piece being arranged inthe underside of the stock as shown in the drawings. The knife or cutterO extends longitudinally over the throat piece and in rear of itsbearing face c, and is fastened at its two ends to the stock by screws,d, d. A chip throat or passage, c, is formed between the knife and theadjustable throat piece B, such chip throat or passage c, being made toopen or have its discharging mout-h at the back of the spoke shave asshown in the drawings. Near the two rearmost corners of the adjustablethroat piece B, it is provided with two pivots or journals, j', f, whichextend into bearings or pivot holes mad-e in the stock and so as toenable the throat piece to be moved either toward or away from thecutting edge of the knife, its

movement toward the said edge being effected by an adjusting screw, D,extending through the front part of the middle of the stock and againstthe throat piece, B, as shown in the drawings. Furthermore, springs, g,g, are arranged between the throat piece and the knife and near toopposite ends of the throat such springs operating to produce a countermovement of the adjustable throat.v

I do not claim any improvement or any arrangement of parts asrepresented or as claimed in the United States Patent, No. 20855, foralthough I employ an adjustable bearing surface in front of the cutterand apply the same to the stock by means of a lever actuated by anadjusting screw, my invention consists in an improved arrangement and bymeans of it and with reference to the spoke-shave described in the saidpatent, I am enabled to dispense with a stock bearing surface, separatefrom the cutter or knife and arranged in rear thereof, and make thecutter itself or the lower surface thereof a bearing surface, andfurthermore, the discharging mouth of the chip throat of my improvedspoke shave is left free or has nothing in rear of it to obstruct theescape of shavings. In this way, while I gain all the advantages of thecommon spokeshave having no bearing in rear of its knife I also securethat of an adjustable throat and a bearing in front of the knife.Furthermore, I so arrange the space between the said throat piece andthe stock, that no shaving passing into the throat can easily getbetween the said throat piece and the stock so as to clog the operationof the throat piece or prevent it from being moved by its adj ustingscrew.

I claim- My improved arrangement of the adjustable mouthpiece and itsoperative mechanism with respect to the stock and the cutterl arrangedin the stock as specified.

SAMUEL LEONARD.

Witnesses:

LAFAYETTE KEITH,

GEO. L. GATES.

